H1 Tag

The H1 tag is the highest-level heading element (<h1>) in HTML. It names the main subject of the page and sits at the top of the heading hierarchy, followed by <h2> and <h3> for subsections.

Why it matters

A clear H1 helps visitors confirm they are on the right page and gives search engines a strong cue about the topic. It also gives screen reader users a landmark for the page's purpose. HTML5 technically allows several, but one H1 per page keeps the outline simple.

On long pages, a descriptive H1 plus logical H2 sections also makes it easier to link to a specific part of the article and for assistive technology to jump between sections.

Example

<h1>How to Fix a 502 Bad Gateway</h1>
<h2>Check the upstream server</h2>
<h2>Review proxy timeouts</h2>

Common mistakes

• Wrapping the logo in an H1 on every page, so all pages share the same main heading.
• Skipping levels, such as jumping from H1 to H4, for styling only.
• Hiding the H1 with CSS or leaving it empty.

Related

• Title tag
• On-page SEO
• Keyword
• Meta description

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